A man raped his daughter and got her pregnant when she was only 13-years-old. The young girl gave birth to a healthy baby boy.

The boy's father is also his grandfather.

Prosecutors asked for the maximum sentence of 20 years in prison. But the judge gave the father only one year in prison after admitting to sexually assaulting and impregnating his daughter.

After a DNA test proved that Montgomery was the child's father, he was charged.

Fred Lee Montgomery, 47, pleaded guilty to second-degree criminal sexual conduct with a minor in a Lancaster County courtroom. At first the judge sentenced him to 15 years in prison, but then the judge changed the sentence to time serve and ordering the man to serve only one year in prison.

His daughter Tiara Stevens, 27, who was only 13 when she gave birth to her father's son, was devastated with the sentence.

"It is a slap in the face, he gets a pat on the back telling him it is ok to molest his own daughter, impregnate her to have a child, is that ok?" Stevens said. "He was calm and he showed no remorse. I sat down and cried. All he said was that he had a problem. He finally admitted he had a problem."

When Montgomery is released from prison, he will be on probation for four years and he will have to register as a sex offender.

Stevens said that she does not know how to tell her child, who is also her brother, about his grandfather who will leave prison next year.